ICD-10-CM 2027 diagnosis code

C63.0Malignant neoplasm of epididymis

Not billable — use a more specific code

C63.0 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About C63.0

C63.0 is the ICD-10-CM diagnosis code for malignant neoplasm of epididymis. It belongs to category C63 (malignant neoplasm of other and unspecified male genital organs), block C60-C63 (malignant neoplasms of male genital organs) and chapter 2 (neoplasms). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within C63 (malignant neoplasm of other and unspecified male genital organs), C63.0 is specifically for malignant neoplasm of epididymis. Related codes cover spermatic cord (C63.1), scrotum (C63.2), other specified male genital organs (C63.7), overlapping sites of male genital organs (C63.8) and male genital organ, unspecified (C63.9).

To report this condition, pick the subcode that matches the documentation: C63.00 (epididymis), C63.01 (epididymis) and C63.02 (epididymis).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under C63.0

Notes that apply from higher levels

Instructions written at a parent level also apply to C63.0.

Broader instructions also apply from C60-C63 Malignant neoplasms of male genital organs and Chapter 2: Neoplasms.

Table of Drugs & Neoplasms entries

Neoplasm, neoplastic › epididymis — Malignant Primary

Code history

2016
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2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about C63.0

Is C63.0 billable?: No. C63.0 is a header code. Report one of its more specific subcodes instead.